Escape, pinching fanciful tree decoration? (5,5)
I believe the answer is:
fairy light
'tree decoration?' is the definition.
(Christmas tree decoration)
'escape pinching fanciful' is the wordplay.
'escape' becomes 'flight' (synonyms).
'pinching' means one lot of letters goes inside another (taking inside).
'fanciful' becomes 'airy' (I've seen this before).
'flight' placed around 'airy' is 'FAIRY LIGHT'.
(Other definitions for fairy light that I've seen before include "one lit on tree perhaps" , "Decorative twinkler" .)